Sin = opposite over hypotenuse
The opposite side of ∠A is BC, or <span>a
</span>The hypotenuse is c (longest length)
a/c is your answer
<span>B. a/c
</span>
hope this helps
An example of basic trigonometric functions question is find tan
.
<h3>What are trigonometric functions?</h3>
The term trigonometric function is known to be made up of functions such as sine (sin), cosine (cos), tangent (tan), etc., that stands for the ratios of sides of all right triangles.
To solve for tan 
It will be
= 2
+ 
θ = 
θ = 
To know the right angle,
θ =
x 180/4 = 45⁰
tan θ = 1
Therefore, tan
= -1
Learn more about trigonometric functions from
brainly.com/question/24349828